Observations assimilated in ERA5

This animation shows observations assimilated in the ERA5 global reanalysis since January 1940 (Soci et al., 2024 https://doi.org/10.1002/qj.4803). Each dot on a map shows the data counts at monthly resolution and horizontal resolution 2 deg. x 2 deg. latitude, longitude. The animation includes 12 frames per second, and is based on observation feedback data of the ERA5 reanalysis until December 2024. Note this animation does not show all the observations that supported the creation of forcings that are used by the model.